package Socket;

import java.io.*;
import java.net.Socket;
import java.nio.charset.StandardCharsets;
import java.util.Scanner;

/**
 * 聊天室的客户端
 */
public class Client3 {
    private Socket socket;

    public Client3() {
        try {
            /*
                实例化Socket时就是与远程服务器建立连接的过程
                需要传递的两个参数:
                1.服务器的IP地址，用于找到网络上的计算机
                2.服务端口，用于找到服务器计算机上的服务端的应用程序（软件）
             */
            System.out.println("正在连接服务器...");
            socket = new Socket("localhost", 8088);//localhost表示本机IP
            System.out.println("与服务器建立连接成功！");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public void start() {
        //低级流:作用 将写出的字节发送给建立连接的远程计算机
        try {
            SeverHandler handler=new SeverHandler();
            Thread t1=new Thread(handler);
            t1.start();
            OutputStream out = socket.getOutputStream();
            OutputStreamWriter osw = new OutputStreamWriter(out, StandardCharsets.UTF_8);
            BufferedWriter bw = new BufferedWriter(osw);
            PrintWriter pw = new PrintWriter(bw, true);//自动行刷新

            Scanner scan = new Scanner(System.in);
            while (true) {
                String line = scan.nextLine();
                if ("exit".equals(line)) {
                    break;
                }
                pw.println(line);
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                socket.close();//与服务器断开连接
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    public static void main(String[] args) {
        Client3 client = new Client3();
        client.start();
    }
    private class SeverHandler implements Runnable{
        public void run(){
            try {
                InputStream in= socket.getInputStream();
                InputStreamReader isr=new InputStreamReader(in);
                BufferedReader br=new BufferedReader(isr);
                String line;
                while((line=br.readLine())!=null){
                    System.out.println(line);
                }
            } catch (IOException e) {

            }
        }

    }
}
